ai-tools-referencelisted
Install: claude install-skill ragnarwestad/aide
# AI tools reference
Verified configuration overview for all AI tools we support.
This file is the source of truth — don't guess, look it up here.
Last verified: 2026-03-28
## Table of contents
- [Cross-cutting standards](#cross-cutting-standards)
- [Claude Code](#claude-code)
- [GitHub Copilot](#github-copilot)
- [OpenAI Codex CLI](#openai-codex-cli)
- [Comparison](#comparison)
- [Sources](#sources)
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## Cross-cutting standards
### Skills (SKILL.md)
Skills are a cross-cutting standard. All three tools read skills from
overlapping paths:
| Path | Claude Code | Copilot | Codex |
|-------------------------------------|:-----------:|:-----------------------------:|:-----:|
| `~/.claude/skills/<name>/SKILL.md` | yes | no (dropped; verified 1.0.79) | no |
| `~/.copilot/skills/<name>/SKILL.md` | no | yes | no |
| `~/.agents/skills/<name>/SKILL.md` | no | yes (v1.0.11+) | yes |
| `.claude/skills/<name>/SKILL.md` | yes | yes | no |
| `.github/skills/<name>/SKILL.md` | no | yes | no |
| `.agents/skills/<name>/SKILL.md` | no | yes | yes |
**Format:** Folder with `SKILL.md` as the entry point. YAML frontmatter with
`name` and `description` (required). Markdown body with instructions.
**Frontmatter fields** (mapped 2026-08-13, s